Handle file additions/removals in ContextDirectoryManager.

pkg/analysis_server/test/resource_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.resource;
 
 import 'dart:async';
 import 'dart:io' as io;
 
 import 'mocks.dart';
@@ skipping 224 matching lines @@
         test('true', () {
           provider.newFile('/foo/file.txt', 'qwerty');
           File file = provider.getResource('/foo/file.txt');
           expect(file, isNotNull);
           expect(file.exists, isTrue);
         });
       });
 
       test('fullName', () {
         File file = provider.getResource('/foo/bar/file.txt');
-        expect(file.fullName, '/foo/bar/file.txt');
+        expect(file.path, '/foo/bar/file.txt');
       });
 
       test('hashCode', () {
         File file = provider.getResource('/foo/bar/file.txt');
         file.hashCode;
       });
 
       test('shortName', () {
         File file = provider.getResource('/foo/bar/file.txt');
         expect(file.shortName, 'file.txt');
@@ skipping 290 matching lines @@
           expect(file.exists, isFalse);
         });
 
         test('true', () {
           new io.File(path).writeAsStringSync('contents');
           expect(file.exists, isTrue);
         });
       });
 
       test('fullName', () {
-        expect(file.fullName, path);
+        expect(file.path, path);
       });
 
       test('hashCode', () {
         file.hashCode;
       });
 
       test('shortName', () {
         expect(file.shortName, 'file.txt');
       });
 
@@ skipping 56 matching lines @@
         expect(children[1], _isFolder);
         expect(children[2], _isFile);
       });
     });
   });
 }
 
 var _isFile = new isInstanceOf<File>();
 var _isFolder = new isInstanceOf<Folder>();
 var _isMemoryResourceException = new isInstanceOf<MemoryResourceException>();